Inverted Flare. Tube= 5/16".
Fuel Pressure Regulator, Gauge, Bracket, Holley Carburetor Fuel lines Kit 4150
Fuel Pressure Regulator, Gauge, Bracket, Holley Carburetor Fuel lines Kit USA
Fuel Pressure Regulator, Gauge, Bracket, Holley Carburetor Fuel lines Kit NPT
Fuel Pressure Regulator, Gauge, Bracket, Holley Carburetor Fuel lines Kit Nickel